One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,22,26)(19,28,30,24)(20,31,27,23)(21,25,32,29)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,30)(18,24,26,28)(20,29,27,25)(21,31,32,23)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20,23,18,22,27,31,26)(19,29,21,24,30,25,32,28)(2,6)(7,8)(11,16)(13,15)(17,21,22,32)(18,25,26,29)(19,23,30,31)(20,24,27,28)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(19,30)(21,32)(24,28)(25,29)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.